Optician&#39;s angle gauge



Patented Feb. 19, 1924.

l ,UNITED f isiT-#Afir-Es Y risica 'PTENT WILLIAM R.A UHLEMANN, .onEv'ANsToN, rnninolsns'srenoa TouHLruunNNgortrIcA.

COMPANY, oncnrcaeo, :minoren conronnfrronior.rumors.

IPT1CIN S ANGLE GAUGE.

Application filed March 6, 122J1SerilfNol 541,274.

Tor all whom t ma/J concern.'

Be it 'known-that I,"W1LLIAM"R. UHLE- f MANN, a citizen lof theUnitedStatesof "America, residing :Vat Evanston, vfin? the county ofCo'ok'and State of Illinois, have invented a certain new'and usefulImprovement in Opticians Angle Gauges, 'of which thefollowing is aspecification.

I This invention' vrelates to' 1testingl instruf ments `for use byOpticians inyfitting. f and adjusting ythe 'nose' bridges of eyeglassframes so that the bearing surface'offisuch bridge 'willbe'at apredetermined angle to :the plane of the lensesand an vaccurate and`comfortable'it of ythe eyeglassesiattained. The present improvement isintendedas a companion and auxiliarytothe Opticians angle y"me'asurerswhich@ ifor-msf theV vsubject matter-l of. my companion application forLetters YPatent, Serial' 'Nd 541,273,Vled Mar. 6, 1922,v and is usedinthe'nalf'fitting and LadjustmentI ofeye'glass frames after the requiredangular relationofthe resting surface of the'nose bridge to the lensrings has vbeen'determinedV by said measurer.. v

The object of the vpresent improvement is to provide a' structural`rformation and association of gauge parts whereby,\-as the planexofthe-resting surfacepf' the nose -bridge of an eyeglass'framef from afVstock supply is, by a series. ofmanuallyeected bends brought tothedesired angular relation to the plane of the 'lenses 'or lens holdingrings, the progress attained after-lsuch successive operation can V'beaccurately gaged and determined, until'the desired' annular relation oftheV parts is attained and indicated, all as will hereinaftermore'ffully appear.

In the accompanying drawing:

Fig. l, is an elevation'of'the lexterioriof the preferredtype ofthe'instrument,` showing the indicating'dial andl the visible' portionsof the mechanism.

Fig. 2, is an elevation with the dial-carrying wall' removed and withthe transverse walls of the casing in section.

Fig. 3, is a top view of the structure.

Fig; 4, is a central transverse sectional elevation. Fig. 5,. isasectional elevationk of amodied type of the invention. Y

Fig. 6, is a detail elevation of the #construction shownfin Fig. 5.

. Like '.referencelfnumer'als indicate/*like '.parts in theseveral'views. Y Referring fto the drawing, 1J designate @the l frame1orI supportifoff ther instrument,

`vf'which may @beI of4 the open"shellfornil shown in Figs. 1 to 4inclusive',woff the? footed tu- 5 bullarstandardtypeshown inFig:l 5, orof Aother usual and suitable'=form.' N -Y 2 designates avjournalvbracket extension on the support ,1,fproviding. abearingffor@the i transversely arranged pivot sli-aft or :'.spindle 3* of the'mechanism.

14 .designates `ian indicating*dingerl or i and moving' over afgraduatedscale L5 yLon, a `scale plate fof thefsupport'l'.

. 7 2 designates av swinging armi fixedly at- Ltached- 'at lone-fendtoffthepivotl shaft 3,

fpointer ixedly.` associated'y with the' shaft 3 -which arms in VthePreferred form :"ofVthe .f-inventionshownvinFigs; and 2..iis fofiia 1`pointer 4 above i described, andinratheA preferred construction thearm`7'i'constitutes. a

carrier v*for the trial bar f'or` ystraightvedge Sciof the instrument,`with said trial bar :yieldingly `rconnected 'to `said .armV andpreff'eerably' in, the vmanner f' hereinafter described, fand-so thatwith a-turning fmovementf'of the parts to'bring said trial-bar 81-'insurface contact with the face of either the-lens 'or of the lens` ringofy an eyeglass frame, an indication is had by. means of-the 'associatedpointer 4 yand scale 5 ofthe nearness reached tothe Vdesired angle ofsuclrlensior -lens ring surface in relationvto the bearing surface'ofthe nose bridge of the eyeglass frame fas'hereinafter more fullyset-forth. In the -modiied :form of 'the `invention shown in Fig.V5,'the swinging arm 7 is of a 'straight-'rail form iixedlyfattached toarmain s lfshaft'or espindle`l 3 and .formed with 'a x'straight edge 8which in afswinging move- 1 ment ofthe'parts toibringthe` edge SvintoAsurface contact `with the 1 facefof .the lensy or the lens ring of aneyeglasszframe isfadapted "toi 'indicate' 'in 'the' ymanner :abovedescribed the nearness reached to-.thel desired angleY of fthe nosebridge orwlensxforwlens ringfafter each iadjustingf or-;bending'-operation.: The

jaws13, 14v have a fixed relation to the supindex 5 aforesaid.

trial baror straight edge 8 of the preferred construction to therespective ends of the bar or rail 9 and adapted to impose parallelmovement on the trial bar with relation Vto the points of pivotalconnection of the links 11 to the bar or rail 9.V

. 12 designates a tension spring interposed between the trial bar 8 andthe rail 9 with a tendency to draw said trial bar in a direction awayfrom said rail.

13 designates a rest or jaw, which in the preferred construction shownin Figs.- 1 and 3, is fixedly secured to the support 1 in adjacentrelation to the pivot shaft 3 and is adapted toafford a fixed rest orsupport for the bearing surface of the nose bridge of an eyeglass framewhich is undergoing adjustment to hold said resting surface of the nosebridge on a predetermined plane with relation to a given graduation ofthe scale or .14 vdesignates a companion movable or clamping jaws,preferably pivoted on the -nose bridge in place between the jaws r asabove set forth. 1 l Y In such preferred construction the holding port 1and pivot shaft 3, and the shifting in actual use of the trial bar 8 toaiidfrom the shaft 3 is of a resilient nature under the influence of thespring 12 and links 11 aforesaid.

In the modified construction shown in Fig. 5, the holding jaws 13 14 areadjustably connected. together in manner hereinafter described, and asdistinguished from the preferred construction above set forth, havevertical sliding movement in the support 1 to and from the pivot shaft 3by 'a structural formation as Vfollows 15, 16 designate cylindricalheads formed to slide the vertical bore of the support 1 and carrying ontheir adjacentends holding ljaws 13 14 which project laterally through aside slot in the support 1 and beyond the same, to Yreceive and holdVthe nose bridge of an eyeglass frame.

17 designates an operating stem j ournalled axially in the upper head 15aforesaid and having at `its upper end an operating head or handle 18for 'convenient manual rotaiasasee tion, while its lower end isscrew-threaded and has operative engagementiin a screwthreaded orificein the lower jaw 16 to move the holding jaws towards or away from eachother in effecting engagement with or disengagement from an eyeglassframe undergoing adjustment.

19 designates a spring interposed between the heads 15, 16v with aresilient tendency to force the saine away from each other.

It is within the scope of the invention to duplicate the trial bar orstraight edge 8 or 8 and its iiiountings at each side of the holdingjaws, in order that vtrial bearings may be had simultaneously with thesurface of both lenses oi' both lens rings of an eyeglass frame whensuch result is rfound necessary or desirable.

rI`he details of the operation of the instrumentis set forth inconnection with the description of the formation and arrangement of theparts and briefly stated is as follows The desired angle at which thesurface of the lenses or lens rings with relation to the bearing surfaceof thenose bridge of an eyeglass frame havingrbeen vascertained by ameasuring instrument such as set forth in my aforesaid companionapplication Serial No. 541,273, thev nose bridge of the frame to befitted or adjusted is inserted between and clamped between the holdingjaws 13, 14 or 13 14 after which a twisting of the connecting portionsof the nose bridge is eected by any usual means, during whichtwistingoperation the trial bar or straight edge 8 or 8 is from time totime used to vascertain the nearness which is reached to the requiredangle of the face of the lenses .or of thev lens rings in relation tothe bearlar relation between the bearing surface of the nose bridge andthe face of the lens supporting rings of an eyeglass frame, thecombination of va support carrying an index dial, a'pair of holding jawsand an arm carrying a trial edge mounted in operative relationk on saidsupport in manner to perunison with saidv arm and in indicatingrelationto the dial aforesaid. 4

2. In a testing instrument for use in an adjustment of parts inattaining a required vangular relationrbetween the bearing. surface ofthe nose bridgeaiid'the face of theV lens supporting rings of'aneyeglass frame,

Vthe combination .of-asupport carrying an index dial and a pair ofholding jaws, a movable arm having a portion forming a trial edge, anintermediate means forming a pivotal connection for the movable arm tothe support and adapted to permit movement of the trial edge portion ofthe movable arm to and from said holding aws, and a pointer turning inunison with the movable arm in indicating relation to the dialaforesaid.

3. In a testing instrument for use in an adjustment of parts inattaining a required angular relation between the bearing surface of thenose bridge and the face of the lens supporting rings of an eyeglassframe, the combination of a support carrying an index dial and a pair ofholding jaws, a movable arm having a portion forming a trial edge, anintermediate means forming a pivotal connection for the movable arm tothe support and adapted to permit movement of the trial edge portion ofthe movable arm to and from said holding jaws, and a pointer turning inunison with the movable arm in indicating relation to the dialaforesaid, the movable arm having a curved form adjacent to its noint ofpivotal connection to afford clearance past the holding jaws.

4. In a testing instrument for use in an adjustment of parts inattaining a required angular relation between the bearing surface of thenose bridge and the face of the lens supporting rings or' an eyeglassframe, the combination of a support carrying an index dial, holding jawsarranged on said support, a movable arm having its pivotal connectionadjacent to said jaws and coinprising a main arm, a straight edge orbar, radius links connecting the straight edge to the main arm, a springtending to move said straight edge in a direction away from the mainarm; and a pointer moving in unison with the movable arm in indicatingrelation to the dial aforesaid.

5. In a testinginstrument for use in an adjustment of parts in attaininga required angular relation between the bearing surface of the nosebridge and the face of the lens supporting rings of an eyeglass frame,the combination of a support carrying an index dial, holding jawsarranged on said support, a movable arm having its pivotal connectionadjacent to said jaws and comprising a main arm, a straight edge or bar,radius links connecting the straight edge to the main arm, a springtending to move said straight edge in a direction away from the mainarm, and a pointer moving in unison with the movable arm inindicatingrelation to the dial aforesaid, the movable arm having acurved form adjacent to its point of pivotal connection to affordclearance past the work in the holding jaws.

6. In a testing instrument for use in an adjustment of partsin attaininga required angular relation between the bearing surface of the nosebridge and the face of the lens supporting rings of an eyeglass frame,

the combination of a support carrying an index dial, holding jawsarranged on said support, a movable arm having its pivotal connectionadjacent to said jawsoand comprising a main arm having a secondary barin spaced relation, a straight edge or bar, radius links connecting thestraight edge to the secondary bar, a spring tending to move saidstraight edge in a direction away from said secondary bar, and a pointermoving in unison with the movable arm in indicating relation to the dialaforesaid.

7. In a testing instrument for use in an adjustment of parts inattaining a required angular relation between the bearing surface of thenose bridge and the face of the lens supporting rings of an eyeglassframe, the combination of a support carrying an index dial, holding jawsarranged on Said support, a movable arm having its pivotal connectionadjacent to said jaws and comprising a main arm having a secondary barin spaced relation, a straight edge or bar, radius links connecting thestraight edge to the secondary bar, a spring tending to move saidstraight edge in a direction away from said secondary bar, and a pointermoving in unison with the movable arm in indicatin relation to the dialaforesaid, the mova le arm having a curved form adj acont to its pointof pivotal connection to afford clearance past the work in the holdingjaws.

Signed at Chicago, Illinois, this lst day of March, 1922.

WILLIAM RVUHLEMANN.

